Electrical

Orthogonal Frequency Division Multiplexing for Wireless Communications

Name: Orthogonal Frequency Division Multiplexing for Wireless Communications
Brand: Springer
SKU: 9780387290959
Price: 22703.00 INR
Availability: InStock
ISBN: 9780387290959

ORTHOGONAL FREQUENCY DIV MULTI

Contributor(s): Li, Ye Geoffrey Editor , Stuber, Gordon L. Editor Format: Hardback

Hardback · ISBN 9780387290959

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Key Specifications

ISBN	9780387290959
Subtitle	ORTHOGONAL FREQUENCY DIV MULTI
Publisher	Springer
Publication date	March 2006
Language	English
MRP	£179.99 GBP
Page count	320
Item weight	138 g

Frequency division multiplexing (FDM) is a technology that transmits multiple signals simultaneously over a single transmission path, such as a cable or wireless system. Each signal travels within its own unique frequency range (carrier), which is modulated by the data (text, voice, video, etc.).

Orthogonal FDM's (OFDM) spread spectrum technique distributes the data over a large number of carriers that are spaced apart at precise frequencies. This spacing provides the "orthogonality" in this technique which prevents the demodulators from seeing frequencies other than their own. The benefits of OFDM are high spectral efficiency, resiliency to RF interference, and lower multi-path distortion. This is useful because in a typical terrestrial broadcasting scenario there are multipath-channels (i.e. the transmitted signal arrives at the receiver using various paths of different length). Since multiple versions of the signal interfere with each other (inter symbol interference (ISI)) it becomes very hard to extract the original information.

OFDM is sometimes called multi-carrier or discrete multi-tone modulation. It is the modulation technique used for digital TV in Europe, Japan and Australia.

Orthogonal Frequency Division Multiplexing for Wireless Communications

Key Specifications

Li, Ye Geoffrey Editor

Stuber, Gordon L. Editor

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